Troubleshooting the MIG Welding Process

Monk, Andy; Morrett, Bruce
May 2009
Assembly;May2009, Vol. 52 Issue 5, p26
The article offers tips on solving common metal inert gas (MIG) welding problems. A welder should shield the arc and weld puddle from drafts with a welding screen to avoid porosity. It is important to reduce the welding current, decrease the welding arc voltage and adjust the MIG gun angle toward the joint so that undercutting will not occur. Keeping track of the heat is important to avoid the occurrence of excessive penetration.


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